Kenwood KAC-6402 User manual

© 2005-5 PRINTED IN JAPAN
B53-0285-00 (N)1708
POWER AMPLIFIER
KAC-6402
SERVICE MANUAL
Accessory
(W01-1606-05)
190mm
Screw set
(N99-1587-05)
Fuse
(F52-0014-05)
Connecting cord assy
(E30-6144-05)
4/3/2channel
Power Amplifier
Powe Amplifie
MAXIMUMPOWER
4/3/2channel
KAC-6402 (E type,M type)
KAC-6402 (K type)
This product uses Lead Free solder.

KAC-6402
2
BLOCK DIAGRAM
+6dB 0dB +29.5dB
ISOLATION
AMPLIFIER
LINE IN
AL
ST/MONO
Ach
INPUT
GAIN
CONT.
LINE IN
AR AMPLIFIER
ISOLATION
ISOLATION
AMPLIFIER ST/MONO
AMPLIFIER
ISOLATION
SPEAKER
INPUT
GAIN
CONT.
Bch
INPUT
BR
LINE IN
LINE IN
BL LPF+6dB
HPF
HPF
LPF+6dB
LPF+6dB
HPF
LPF+6dB
HPF
MUTE
AMPLIFIER
POWER
POWER
AMPLIFIER
AMPLIFIER
POWER
POWER
AMPLIFIER
OUT BR
SPEAKER
SPEAKER
OUT BL
OUT AR
SPEAKER
OUT AL
SPEAKER
CONVERTER
DC/DC
AVR
15V OVER ROAD PROTECTION DC DETECT AND
THERMAL
PROTECTION PROTECTION
OVER VOLTAGE
P CON CIRCUIT P CON
BATTERY
A-AB
+1
-1
+1
-1
FREQ. CONT.
FREQ. CONT.
COMPONENTS DESCRIPTION
●AUDIO UNIT (X09-5890-10)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1,3 Buffer amplifier Lowers impedance and amplify by 6dB
IC2,4 Isolation amplifier Reduces common mode noise
IC5,9 Buffer amplifier Rch operates as reverse amplifier
IC6,10 Reverse buffer amplifier Reverse amplifier operation of 6dB
IC7,8,11,12 LPF/HPF LPF and HPF with variable cut off
IC13 DC-DC converter Oscillation and control of DC-DC converter
Q3,4 Constant voltage power supply Constant voltage control of ±15V
Q5,6 DC-DC converter Switching FET
Q7,8,9,10 DC-DC converter Gate driver for Q5,6
Q11,12 DC-DC converter ON/OFF of IC13 output
Q101,102,201,202 Input mute circuit Shock noise absorption at power ON/OFF
Q103~106,203~206 Power amplifier First step differential absorption
Q107~110,207~210 Power amplifier Second step differential absorption
Q111,112,211,212 Power amplifier Second step current mirror load
Q113,114,213,214 Power amplifier Power amplification circuit bias temperature compensation
Q115~118,215~218 Power amplifier Excess current detection
Q119~122,219~222 Power amplifier Power amplification step darlington driver
Q123~126,223~226 Power amplifier Power amplification step darlington output transistor
Q601 B-class step mute Mute signal generation circuit:Normally ON
Q602 Mute circuit Mute signal generation circuit:Normally OFF
Q603 Input mute Mute signal generation circuit:Normally OFF
Q604 Power ON/OFF Primary power supply control transistor:Normally ON
Q605 Power ON/OFF Power control circuit
Q606 Power ON/OFF Excess voltage protection circuit: Goes OFF when primary input voltage of 16V or less
Q610 Excess current detection Goes ON when detecting excess current and turns OFF DC-DC converter
Q611,612 DC output voltage detection Goes ON when detecting DC output voltage from power amplifier

KAC-6402
3
COMPONENTS DESCRIPTION
ADJUSTMENT
No. Item Alignment point Method Align for Note
VR5 (ALch)
1IDLE VR6 (ARch) Connect a DC voltmeter 2.5mV After Power on
CURRENT VR7 (BLch) between emitter resister 5 minutes
VR8 (BRch)
Q226 Q224 Q225 Q223
Q124 Q126 Q123 Q125
VR5
AL
AR
VR6
BR
VR8
BL
VR7
DC voltmeter
BRch 2.5mV R456
DC voltmeter
BLch 2.5mV
R455
DC voltmeter
ALch 2.5mV
DC voltmeter
ARch 2.5mV
R255R256
Ref. No. Application / Function Operation / Condition / Compatibility
Q613,614 DC output voltage detection Latch circuit at DC detection
Q615,616 B-class step mute transistor Circuit for turning OFF input of power amplification step
Q617,618 B-class step mute transistor Driver for Q615,616: Normally ON
D1 Reverse connection protection Melts off fuse when primary power supply is inversely connected
for primary power supply
D2,3 AVR reference voltage Control Q3,4 by Zenner voltage generated at D2,3
D4,5 Secondary power supply rectifier
D6~9 Switching Reverse flow prevention
D22,201,101,102 Temperature compensation Makes 2nd step deferential transistor ∆Vbe current constant
D32~37 Static protection Prevents ope amp destruction by static
D103,104,203,204 Current mirror 2nd step deferential amplifier current mirror load
D105,106,205,206 B-class step mute Reverse flow prevention
D107~110,207~210 Excess current detection Reverse flow prevention
D229,430 Input mute Reverse flow prevention of signal current
D601 LED control D610 power indicator control
D602,603 Mute control Reverse flow prevention
D604 AVR for mute 10V
D605 Power control Reverse flow prevention
D606 Primary power supply excess Level shift
voltage detectoin
D607 Power control Level shift

KAC-6402
4
ABCDE
1
2
3
4
5
6
7
PC BOARD (FOIL SIDEVIEW)
W412
R636
R613
R614
R637
R633
C610
C607
R605
R604
R610
R608
R607
R611 R609
R612
R606
R602
R635
C609
R632
R634
R617
R621
R620
R629
R623
R622
R668
R662
R664
W416
R671
R666
R670
R661
R667
R669
R13
W417
W421
R12
W420
W419
R14
R10
R19
R25
R24
R22
C13
W413
W414
R26
R21
C11
W415
R23
R16
R17
R8
R15
R11
W418
W402
W407
W406
R663
R665
W409 W410
W411
W408
R237
R251
C217
R233
R241
C221
R229
W388
W395
W394
W387
R243
R235
W396
W397
W400
W398
W399
W401
R27
R18
R2
R1
R221
R231
W389
W392
W390
W391
W393
R225
R223
R219
W385
W381
R213
R209
W384
W383
W382
R425
R423
R465
W404
R421
R466
R413
W379
R431
W380
R419
TH1 R443
R449
C419
R439
R437
W405
R435
W403
R451
C421
R441
R429
R433
C417
W386
R9
18
169
BE
BE
BE
BE BE
BE
BE
BE BE BE
BE
BE
B
EB
E
BE
BE
BE
BE
BEBE BE
C6
C7
L2
L3
W601
C606
R261
R461
C14
R618
C461
C903
C907
C1
11109
7 8
3 4
5 6
1 2
C8
C12
C211
C223
C224
C411
C423
C424
C601
C602
C603
C608
C617
R7
R245
R247
R255
R257
R258
R445
R453
R455
R457
R458
R603
R615
R616
VR5
VR7
C15
W174
W167
W166
W172
SDG SDG
W175
W173
W170
W176
W171
W181
W178
W179
W177
W180
W182
W112 W113
W131 W123
W163
W161
W68
W127
W99
W100
W106
W102
W101
W137
W144
W151
W147
W143
W146
W150
W136
W104
W103
W142
W156
W165
W152
W138
W140
W80
W79
W78
W71
W75
W76
W77
W135
W124
W164
W157
W141
W94
W74
W162
W155
W107
W139
W120
W125
W126
W128
W129
W133
W132 W118
W116
W115
W114
W134
W117
W149
W148
W109
W105
W70
W72
W73
W92
W108
W121
W122
W85
W96
W69
W91
W86
W87
W88
W98
W90
W93
W83
W82
W97
W119
W89W81
W95
W84
W145
W154
W110
W111
W153
W130
W158
W160
BL
AL
C9
EB EB
BE
EB
E
E
BE
BE
B
E
B
BE
BE
BE B
BBE
BE
E
E
B
E
BE
C10
Q615
D616
Q605
Q606
D607
D606
D614
Q614
Q602
D602
D603
D605
D604
D601
Q603
Q601
Q612
Q611
D613
Q613 Q610 Q616
Q618
Q617
Q12
Q7
Q8
Q9
Q11 D6
D9
D8
D7
Q10
D109
D111
D
D103
D101
D430
D206
D203
D
D207
D209
D4
Q123
Q223
D5
Q125
Q225
D1
J9
P1
Q5
Q6
Q113
Q213
Q119
Q219
Q121
Q221
Q604
Q107
Q109
Q111
Q117
Q207
Q211
Q215
Q217
IC13
AUDIO UNIT
X09-5890-10
(J76-0087-11)
Refer to the schematic diagram for the values of
resistors and capacitors.
X09-5890-10
Ref. No. Address
IC1 3I
IC2 3H
IC3 2I
IC4 2H
IC5 3I
IC6 3I
IC7 3H
Ref.No. Address
IC8 3H
IC9 4I
IC10 4I
IC11 4H
IC12 4H
IC13 4C
Q3 6I
Ref. No. Address
Q4 6H
Q5 2C
Q6 2B
Q7 3B
Q8 3C
Q9 3B
Q10 3C
Q11 4B
Q12 4C
Q101 4F
Q102 4F
Ref.No. Address
Q103 4F
Q104 4F
Q105 4F
Q106 4G
Q107 4E
Q108 5G
Q109 5F
Q110 5G
Q111 4E
Q112 4G
Q113 6E

KAC-6402
5
JIHGF
1
2
3
4
5
6
7
R417
R201
R235
R249
R219
5
W377 R217
R211
C901
W381
R213
R209
R421
R413
R411
R409
W379
R431
W380
W376
R419
C905
W378
R119
R115
C117
C31
R128
R240
C220
R232
C222
R242
R239
C219
W375
W372
W371
W370
R252
R238
W369
W367
W360
R234C218
R230
R244
R236
R250
W364
R660
R659
W374
R216 R202
R204
C204
R208
R215
C259
R227
C260
R228
R205
R203C203
R207 R206
R210
R212
R214
W368
R218
C902
R220 R266
R265
R408
R404
C404
R401
R405
R407
R403
C403
W373
R406
C459
R415
R427
C460
R428
R414
R410
R402
W365
R418
R416
R412 W366 C906
R420
W357
R178
R224
R222
R226
R174
W363
R176
C37
R170
R172
C38
R173
C154
C152
R166
W353
R168
R164
R177
W358
R422
R424
R426
R378R374
W362
W361
R432
W359
C352
C354
R376
C41
R372
C42
R370
R375
R377
R373
R366
W354
W355
W356
R368
R364
W351
W350
W352
R6
W343
R5
W319
W312
W308
W318
W317
W322
W310
W309
W315
W306
W311
W305
W303
R353
W324
W327
R381
W323
R181
R161
R169
R171
W339
W333
W334
C153
C151
R165
W347
R175
W337
R167
R163
W338
R179
C35C36
R158
R162
R160
R180
W325
R154
C150
R157
W332
R159
W328
W330
R116
R361
R360
W348
C351
C353
R371
R369
W342
W336
W340
W335
R118
C110
W346C32
W345 R130
R365
R120
W341
R367
R363
C108
C40 C39
R359
R358
R362
R379
R352
R380
R354
C350
C118
R357
R110
R108
R114
R112
W331 R106
C106
R153
R152
R182
W321
R155
R151
R156
W313
R351
R356
R355
R382
W320
W316
C101
C102
R100
R104
W30
W302
W301
W304
C324
C128
R450
R440
C420
R436
R444
R442
C422
R452
R438
C418
R434
R430
R303
R304
C317
C318
R312
R327
R313
R311
R328
R314
C33
R319
C109
R320
C34
R330
C308
R318
C310
C107
R316
R129
R117
R329
R317
C309
C307
R315
C306
R109
R107
R306
R310
R308
R127
R113
R111
R300
C105
W329
R105
C305
R305
R309
R307
W326
W344
W349
R126
R323
R123
R103
C129
R125
R145
R326
R324
R325
C301
R321
R121
W314 R322
R122
R124
C302
BE
BE
BE
BE
BE
BE BE
BE
BE
BE BE
BE
VR1
VR2
VR3 VR4
2
5
6
71
4
31
2
9
10
C2
C3
C616
C4
C5
C100
C207 C208
C209 C210
C261
C300
C407 C408
C409 C410
C461
C904
C908
C103
C104
C111
C112 C113
C114
C115
C116
C155
C156
C157
C158
C159
C160
C201
C202
C205 C206
C
211
C212
C213
C214
C215 C216
C303
C304
C311
C312
C313
C314
C315
C316
C355
C356
C357
C358
C359
C360
C401
C402
C405 C406
C411
C412
C413
C414
C415 C416
R101
R102
R246
R248
R253 R254
R256
R301
R302
R446
R447
R448
R454 R456
VR6
VR8
W55
W12
W8
W22
W2
W3
W11
W14
W59
W62
W16
W68
W18
W20
W159
W19
W60
W23 W21
W17
W25
W24
W38
W36
W33
W31
W30 W27
W35
W32
W29
W34
W37
W39
W28
W40
W13
W10
W4
W54
W41
W52
W64
W71
W53
W47
W58
W67
W5
W7
W6
W26
W15
W48
W63
W57
W70
W46
W45
W1
W61
W69
W66
W65
W56
W44
W51
W43
W42
W50
W49
W9
BR
AR
14
85
41
58
41
58
41
58
41
58
41
58
41
58
41
58
41
58
41
58
41
58
41
58
41
58
EB
BE
BE
BEBEB
EB
EB
E
B
E
B
E
B
BE BE
B
B
BEEBE
EEB
BE B
EBE BE EB
BE
BE BE
B
E
BE
EB
E
B
EB
Q205
D107
1
D105
D101
Q105
D201
D108
D110
D106
Q104
Q103
Q101 Q102
Q106
D229
D102
Q202
Q204
Q203
Q201
Q206
D22
D104 D204
D3
D2 D610
D34
D32
D33
D208
D205 D211
D210
D37
D35
D36
Q3
Q123 Q124
Q224
Q4
Q126
Q225 Q226
S4
S5
J2
Q114
Q214
S1
S2
S3
J1
AB-A
S1.INPUT
VR2.Bch SENS
ST-MONO
S2.Bch
VR1.Ach SENS
ST-MONO
VR3.Ach
FREQUENCY
HPF-OFF-LPF
S4.Ach HPF-OFF-LPF
S5.Bch
VR4.Bch
FREQUENCY Ach Bch
Q119 Q120
Q220
Q122
Q221
Q222
Q107
Q108
Q109
Q110
Q112
Q115 Q116
Q118
Q207
Q208
Q209
Q210
Q212
Q216 Q218
S3.Ach
IC12
IC8
IC11 IC10 IC9
IC7
IC2
IC6 IC5
IC1
IC4 IC3
Ref. No. Address
Q114 6G
Q115 5F
Q116 5H
Q117 5E
Q118 5G
Q119 5E
Q120 5H
Q121 5D
Q122 5G
Ref.No. Address
Q123 5F
Q124 5H
Q125 5D
Q126 5G
Q201 4F
Q202 4F
Q203 3F
Q204 3F
Q205 3F
Ref. No. Address
Q206 3G
Q207 3E
Q208 3G
Q209 3F
Q210 3G
Q211 3E
Q212 3G
Q213 2E
Q214 2G
Ref. No. Address
Q215 3E
Q216 2F
Q217 3E
Q218 2G
Q219 2D
Q220 2G
Q221 2F
Q222 2H
Q223 2D
Ref.No. Address
Q224 2G
Q225 2E
Q226 2H
Q601 5B
Q602 5B
Q603 5B
Q604 6B
Q605 6B
Q606 6B
Ref. No. Address
Q610 6C
Q611 6C
Q612 6C
Q613 6C
Q614 6C
Q615 6D
Q616 6C
Q617 6D
Q618 6C

KAC-6402
6
ABCDE
1
2
3
4
5
6
7
D35
D34
S3
Q4
Q3
D5
D4
Q8
Q6 Q10
Q9
Q5 Q7
D6
Q11
Q12
D2D3
IC1(2/2)
(2/2)
IC2
IC1(1/2) IC2(1/2)
ST/MONO
S1
A/AB
ST/MONO
S2
(2/2)
IC9
INPUT SENS.
(1/2)
IC9
(2/2)
IC10
IC10 (1/2)
(1/2)
IC5
INPUT SENS.
IC5
(2/2)
IC6 (1/2)
(2/2)
IC6
IC4(1/2)
IC4
(2/2)
IC3(1/2)
D37
IC3(2/2)
D36
INPUT
SP
J2
A
LINE IN
LR
LBR
J1
D33
D32
PHASE INVERTER
DC/DC CONVERTER
BUFF ISO
BUFF ISO
TP24
TP25
TP71
TP23
TP72
TP64
TP69
TP73
TP74
TP63 TP65 TP66
TP255
TP253
VR1
TP250
TP249
TP251
TP227 TP228
TP233
TP223
TP230
TP23
4
TP225
TP358
TP359
TP60
TP57
L2
C10
47u25
C2
10u50
C4
47u25
C3
10u50
C5
2.2K
R5
2.2K
R6
2200u35
C6
2200u35
C7
1/2W
10
R7
1200P
C8
3300u16
+
C15
3300u16
+
C9
56
R10
56
R11
4.7K
R8
4.7K
R9
56
R12
1.5K
R14
1.5K
R15
56
R13
27K
R17
27K
R16
85
67
1K
R105 10K
R111
15P
C105
10u50
C103
1000P
C101
10K
R103
10K
R107
R109 12K
C117 100P
R115 10K
15P
C107
R117 10K
C109 100P
47u25
C111
R113 10K
C100 1000P
R100 1K
7
6
85
0.01
C31
R119 47KR120 47K
C110 100P
R118 10KR110 12K
1K
R106
15P
C106
10K
R108
10K
R112
C118 100P
R116 10K
0.01
C32
15P
C108
47u25
C112
R114 10K
1000P
C102
10K
R104
10u50
C104
21
344
3
21
R1 8.2K
R2 8.2K
1K
R102
1K
R101
10
R145
1000P
C129
TP67
2
4
8
10
5
67
10K
R153
100
R151
430
R156
430
R155
2
31
4
8
R154 10K
C150 47P
0.01
C35
0.01
C36
5
67
10K
R157
R159 20K
10K
R161
10K
R165
3K
R167
VR3
2
31 8
4
10K
R158
20K
R160
1
0
R
1
2.2
K
R16
2.2K
R163
TP226
10K
R152
R360
20K
R359 20K
TP333
R358
C350 47P
R354 10K
410K
R352 R351
10K
C39
3
2
0.01
C40
81TP327
0.01
TP351 3
2
430
100
R353
10K VR2
R355
R356
TP349
TP350
430
TP353 TP323
6
57R357
10K 6
5
TP325
TP328
R367
R3
6
8
4
1
R
1
TP330
2.
2
TP3
3
VR4
2.2K
R363
7R3
6
10
K
TP326
R365
R318 10K
C310 100P
C309 100P
R317 10K
TP120
R302 10u50
1K
C304
1000P
C302
R304
10K
C306
15P
1K
TP85
3
R306
2
TP86TP87
4
1
C318 100P
R312
10K
3
9 7
1
R316 10K
2
3
C308
15P
TP122
TP121
R310 12K
R309 12K
1000P
R307R308
10K
TP78
10K
C303
10u50R301
1K
C301
R303
10K
TP76
C305
R305
1K
15P
6
5
R315 10K
C317 100P
R314 10K
R300 1K
C300 1000P
R313 10K
TP82
TP80
TP79TP77
7
8R311
10K 5
6
C307
15P
C34
0.01
R320 47K
4
1C312
47u25
TP81
R319 47K
C33
0.01
87C311
47u25
AS
AL
BS
BL
BR
AR
TP36
47K
47K
R329
47K
R327
R328
R330
47K
9
7
3
1
R323C313
10u50
C315
10u50 51K
R325
51K
10u50
C314
10u50
C316 51K R326
R324
51K
TP34
2.2K
R321
TP33
2.2K
R322
TP35
47K
R122
51K 10u50
10u50
C115
10u50
C116
C113
10u50
C114
TP30
TP31
51K
51K
R125
R123
TP29
2.2K
R121
51K
R124
R126
2.2K
47K
47K
R127
R129
10
47K
R130
R128
8
4
TP32
2
12
34
56
10
9
78
AR
AS
AL
C324
0.01 C128
0.01
BL
BS
BR
B
+B 14.4V
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
++
++
++
(X09-5890-10)
10K
10K
10K
10K
15.0V 15.0V
-15.0V
-15.0V
-15.0V
15.0V
-15.0V
15.0V
-15.0V 15.
0
-15.0V
1
5
-15.0V
25.0V
15.6V
-15.6V -25.0V
-15.0V
X09-5890-10 (1/3)

KAC-6402
7
JIHGF
D229
Q106
Q104
Q112
D104
Q102
Q101 D102
Q108 Q110
D101
Q107 Q109
Q103 Q105
D103
Q111
Q116
Q114
Q118
D108
Q120 Q12
4
D111
D106
D105
Q117
Q121
D110
Q122
D109
Q113 Q115
D107
Q119
Q12
6
Q12
5
Q12
3
D
6
D7
D8 D9
/
2)
C
10
IC11
(2/2)
(1/2)
IC11
IC12
(1/2)
IC12 (2/2)
S4
A
R
IC10 (1/2)
HPF/
LPF
OFF/
D430
Q206
IC6 (1/2)
IC8 (2/2)
(1/2)
IC8
2
/2)
C
6
(1/2)
IC7
IC7
(2/2)
Q201
Q202
OFF/
LPF
HPF/
S5
Q204
Q203 Q205
Q214
Q212
D204
D208
Q216
Q22
4
Q220
B
D209
Q208 Q210
D22
D201
Q207 Q209
Q218
D210
D206
D205 D211
Q213Q211
D203
Q217
Q215
D207
Q219
Q222
Q22
6
Q221
Q22
5
B
L
Q22
3
D604
Q605
D605
Q602
D610
Q601
D602
D601
D603
Q603
Q604
D606
Q606
D607
MUTE
POWER AMP
+B SW
TP228
TP229
TP241
TP244
TP238
TP237
TP232
3
TP230
TP231
TP234
TP235
TP239 TP240
TP243
TP242
TP247
TP246
TP361
TP61
TP372
TP360
TP370
TP369
TP371
TP59
TP58
TP365
TP40
TP
3
T
P
TP
3
TP
3
TP356
TP357
TH1
1
2
3
4
5
6
7
8
IN1+
IN1-
FBACK
DTC
CT
RT
GND
C1
16
15
14
13
12
11
10
9
IN2+
IN2-
REF
OUTCTRL
VCC
C2
E2
E1
C10
2.2u50V
27K
R17
10K
R18
2.2M
R19
27K
R16
0.01
C11
470
R27
1K
R23
6.8K
R22
1000P
C13
R24 16K
10u50
C14
47u25
C12
R26 1.1K
R25
150
R223
150
R225
6.2K
R221
33
R233
470P
C903
1.8K
R229
100
R235
4.7
R245
1.8K
R249
2W
0.1
R253
220
R243
680P
C219
680P
C221
R239 5.1KR241 5.1K
1.8K
R251
2W
0.1
R255
0.01
C217
510
R231
10P
C215
43K
R227
3P
C901
47P
C213
100
R237 4.7
R247
8.2K
R207
100K
R203
100
R213
1.5K
R217
100P
C211
220P
C209
47u25
C207
4700P
C205
820
R211
100
R219
100
R220
10
R261
C261 220u35
+
100K
R204
C204 470P
R206 43K
C203 470P
R205 43K
820
R209
820
R210
820
R212
10u50
C202
3K
R202
100
R214
47u25
C208
+
1.3K
R216
220P
C210
1.5K
R218
100P
C212
3P
C902
510
R232 47P
C214
43K
R228
10P
C216
0.01
C218
680P
C222
680P
C220
5.1K5.1K
R244
4.7
R248
1.8K
R250
4.7
R246
1.8K
R252
2W
0.1
R256
2W
0.1
R254
100
R236
470P
C904
33
R234
1.8K
R230
150
R224
150
R226
6.2K
R222
47P
C260
8.2K
R208
10K
R265
10K
R266
150K
R660
100K
R659
10u50
C616
R180
2.2K
4.7K
R172
100
R176
10u50
+
C158
47K
C156
10u50
+
0.01
C38
4.7K
R1734.7K
R174
7
2
0K
10K
R161
10K
R165
C151
3K
R167
5
67 8
4
10u 50V
+
C157 100 R175
C159
10u 50V
+
2
31C155
10u 50V
+
R171
4.7K
R177 47K R179 47K
R181 2.2K
VR3
1
8
4
10K
R162
10K
R166
C152
0.33
C154
2.2K
R164
3K
R168
16K
R170
0.33
C153
2.2K
R163 R169 16K
3
21
64
7
85
10u50
C160
+
47P
C259
1.3K
R215
VR6
220
VR5
220
TP226
0.047
C37
0.01
0.047
R178
47K
R238
100
C206
4700P
R182
10K
R21
100K
20K
3
3TP374
TP377
R466
10K
10K
6
10K
R366
TP328 C360
+
+
10u50
4TP344
TP378
47P
C460
8.2K
R408
2
R367
3K
C354R364
TP329
R368
8
4
1R362
10K
TP330
2.2K
C352
TP341
0.047
TP332
0.33
3K
TP334
TP331
VR4
2.2K
R363
TP339
C353
0.33 TP337
R374
4.7K
R370
+
10u50
C356
C358
10u50
3
58
7
16K
21
R376
100
T3242
R372
4.7K
R378
47K
+
TP340
C42
0.01
R369 16K
R373
4.7K
0.01
C41
10u 50V
C359
TP335
7R361
10K
TP326
R365
10K
0.047
C351
TP338
+
10u 50V
C355
C357
+
10u 50V
4
31
TP343
86
57
4.7K
R371
TP346
R377 47K
R375
100 TP347
R465
R382
2.2K
47K
R380
3K
R402
820
R412
820
R410
R406 43K
C404 470P
10u50
C402
C408
47u25
R414
+
R416
1.3K
4700P
C406
100
R404
100K
R403
100K
R409
TP375
820
R411
820
R381 2.2K
R379 47K
3K
R401
TP362
R405 43K
C403 470P
C401
+
10u50
R415
1.3K
R413
100
C405
4700P
47u25
C407
C459
47P
8.2K
R407
TP373
43K
R434
R426
150
R424
150
R422
6.2K
R430
1.8K
C416
10P
220
VR8
C908
470P
33 R436
100
680P
C420
R444
5.1K
TP
3
R446
4.7
R450
1.8K
R454
0.1
2W
TP376
C906
100P
C412
C410
220P
R418
1.5K
R420
C414
47P
R428
3P
R432
510
100
C461 220u35
+
R419
100
R461
10
100
R438
C418
0.01
5.1K
680P
C422
R437
100
R433
C415
R421
6.2K
R417
1.5K
C409
220P
C411
100P
R431
510
C905
3P
47P
C413
43K
R427
10P
R423
150
1.8K
33
R429
VR7
220
R425
150
R439 5.1K
R443
C419
680P
C417
0.01
R441 5.1K
C421
680P
100
C907
470P
R435
4.7
TP
4
TP
4
1.8K
R456
0.1
2W
4.7
R448
R452
0.1
2W
220
R453
TP
4
0.1
2W
R455
1.8K
R451
R447
TP36
6
TP41
R445
4.7
1.8K
R449
R201 3K
C201
10u50
+
R613
1.5K
10K
R606
C602
10u50
C601
33u35
R604
10K
R603
100
R607
4.7K
1.8K
R608
33K
R609
R602
820
33K
R605
TP62
R610
30K
3.6K
R611
10u50
C603 3.9K
R615
3.6K
R612
TP379
14.4V
+B B
14.4V
R442R440
220
R240 R242
220
+
+
+
+
+
+
+
+
+
+
IC13
15.0V
15.0V
-15.0V
-15.0V
15.0V
-15.0V
15.0V
15.0V
V
-15.0V
15.0V
2.4V
5.0V 5.0V
0V
0V
3.6V
14.2V
14.2V
14.2V
0V
12V
5.0V
5.0V
14.4V
0V
2
5
-25.
0
X09-5890-10 (2/3)

KAC-6402
8
ONMLK
1
2
3
4
5
6
7
CAUTION : For continued safety, replace safety critical
componentsonlywithmanufacturer’s recommended parts
(refer to parts list).
Indicates safety critical components. To reduce the risk
of electric shock, leakage-current or resistance measure-
ments shall be carried out (exposed parts are acceptably
insulated from the supply circuit) before the appliance is
returned to the customer.
•DC voltages are as measured with a high impedance
voltmeter. Values may vary slightly due to variations
between individual instruments or/and units.
Q618
Q615
Q617
Q616
0
Q124
1
2
Q126
Q125
Q123
Q611
Q610
Q613
Q612
Q614
P1
J9
AL
AR
D614
D616
D1
D613
POP
MUTE
NOISE-
Q224
0
BR
2
Q226
1
Q225
BL
Q223
D606
D607
IC1-12 : RC4580IDR
TL494IDRIC13 :
2SB1375-F
2SD2012-F
Q4 :
Q3 :
2SK3662-F
2SC4097
Q5,6
Q7,8 : :
2SA1576A(R,S)
2SC4081
2SA1577
DTA114EUA
Q101,102,201,202,601,602,
Q9,10
Q103-106,203-206,603,614,615,617
Q11,12
:
:
:
:
:Q123,124,223,224 2SC4467NF
2SA1694NF
2SB1241
Q125,126,225,226
Q604 : :
2SA817A-F
2SC1627A-F
2SC3419(Y)-F
2SC1845-A(F,E)
2SA992-A(F,E)
Q121,122,221,222
Q113,114,213,214
Q107-110,115,116,207-210,215,216
Q119,120,219,220
Q111,112,117,118,211,212,217,218
:
:
:
:
:
605,606,610-613,616,618
D2,3 FCH10A20
LM1MA142WK-G
UMZ6.8N
02DZ10F-Y
D6,34,36,105,111,205,211
D32,33
D4
D604,614 :
:
:
:
RM4ZLF-J4NF
02DZ16F-Y
D1 : :
02DZ15F-Y
B30-1601-05
02DZ6.8F-YD607 :
D610
D606 : :
D7-9,22,101-103,107-110,201,203,204,
1SS355:
207-210,601-603,605,613,616
D35,37,106,206,229,430
LM1MA142WA-G:
GND LINE
SIGNAL LINE
B LINE
B LINE
DC DET.
D5 FRH10A20:
TP391
TP392
TP390
TP395
TP394
6.8K
R667TP393
TP365
TP40
TP39
TP364
TP37
TP38
TP397
TP381
TP380
TP396 TP398
TP55
C1
10u 25V
W601 6uH
L3
1/2W
10
R458
0.047
C424
5
K
9
2W
0.1
R253
K
1
2W
0.1
R255
7
8
K
0
6
K
2
2W
0.1
R256
2W
0.1
R254
R622 47K
R623 47K
R620 47K
R621 47K
12K
100u10
C606
10K
R629
100u10
C608
6.2K
R635
0.01
C609
R636
2.2K
47K
R632
0.01
C607
12K
R633
C610 0.01
10K
12K
R634
22
R662
22
R661
10K
R664
10K
R663
10K
R668
51K
R671
6.8K
R670
0.1u50
C617
6.8K
R665
10K
R666
47K
R669
6
5
4
3
2
1
8
9
7
10
11 BATT
GND
P CON
BL+
AL+
AL-
BL-
AR-
BR-
AR+
BR+
TP49
TP45
TP50
TP46
TP51
TP47
TP52
TP48
TP368
TP54
TP56
TP53
2.2K
R618
R637
R617
TP367
6
0
K
R454
0.1
2W
TP43
TP42
K
R456
0.1
2W
8
2
0.1
2W
R453
TP44
0.1
2W
R455
K
1
7
TP366
TP41
5
K
9
3.3K
R614
1.5K
10u50
C603 3.9K
R615
R616
3.9K
R257
10 1/2W 0.047
C223
R258
10 1/2W 0.047
C224
R457
10 1/2W C423 0.047
+
+
+
+
KAC-6402
14.4V
25.0V
-25.0V
X09-5890-10 (3/3)
B
C
E
B
EC
2SA817A-F
2SA992-A
2SC1627A-F
2SC1845-A
2SA1576A
2SC3419
2SB1375-F
2SD2012-F
2SC4081
DTA114EUA

KAC-6402
9
Parts with the exploded numbers larger than 700 are not supplied.
EXPLODED VIEW
3
2
1
BA
A
B
C
D
E
φ4x8
φ2.6x12
φ3x10
φ3x6
φ3x8
: N09-6218-05
: N09-6312-05
: N80-3010-43
: N83-3006-43
: N89-3008-48
(X09-5890)
S1
VR2
J1
(X09-)
J2
(X09-)
J9
(X09-)
VR1 VR4 VR3
S2 S3 S5 S4
F1
8
1
5
3
4
10
11
7
Bx10
Bx8
Fx2
Gx8
Ex2
Ex2
Ex2
Ex2
Ex2
Cx2
Bundled to the
transister.
Ex2
722
702
721
712
720
E
E
E
E
E
E
C
DD
A
C
G
C
C
E
E
E

KAC-6402
10
Indicates safety critical components.
✽New parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
Ref. No. A
d
dN
e
wParts No. Description Desti-
nation Ref. No. A
d
dN
e
wParts No. Description Desti-
nation
E1 : Europe K: North America M1 : Other Areas
AUDIO UNIT (X09-5890-10)
KAC-6402
PARTS LIST
12B ✽ A21-4488-02 DRESSING PANEL K
12B
✽ A21-4542-02 DRESSING PANEL E1M1
32B
✽ A64-3555-02 PANEL
41A
✽ A84-0386-02 REAR PANEL
53BB19-2324-03 LIGHTING BOARD
-B46-0100-50 WARRANTY CARD
-
✽ B64-3045-00 INSTRUCTION MANUAL (ENG.FRE.SPA.) KE1
-
✽ B64-3046-00 INSTR.MANUAL (GER.DUT.ITA.POR.) E1
-
✽ B64-3047-00 INSTRUCTION MANUAL (ENG.T-CHI.) M1
71AE30-6144-05 CONNECTING CORD ASSY
83A
✽ F01-1782-01 HEAT SINK
F1 1A F52-0014-05 FUSE (BLADE TYPE)
-
✽ H10-4939-13 POLYSTYRENE FOAMED FIXTURE
-H25-1192-04 PROTECTION BAG (370X440)
-H25-1200-04
PROTECTION BAG (250X350X0.03)
- ✽ H54-3448-03 ITEM CARTON CASE K
-
✽ H54-3449-03 ITEM CARTON CASE M1
-
✽ H54-3501-03 ITEM CARTON CASE E1
10 1A N99-1587-05 SCREW SET
A2BN09-6218-05 TAPTITE SCREW (4X8)
B2B
✽ N09-6312-05 SEMS (TAPTITE SCREW) (2.6X12)
C1AN80-3010-43 PAN HEAD TAPTITE SCREW
D3BN83-3006-43 PAN HEAD TAPTITE SCREW
E1BN89-3008-48
BINDING HEAD TAPTITE SCREW
F1AN07-0003-08 SEMS 6M-AU (ALTERNATIVE PARTS)
G2AN09-4215-08 SEMS 4M-NI
11 1A W01-1606-05 ACCESSORIES
D610 B30-1601-05 LED
C1 C90-5557-05 ELECTRO 10UF 25WV
C2,3 CD04BJ1E470M ELECTRO 47UF 25WV
C4,5 CD04BJ1H100M ELECTRO 10UF 50WV
C6,7 CD04AZ1V222M ELECTRO 2200UF 35WV
C8 CK45FB1H122K CERAMIC 1200PF K
C9
✽ CD04AY1C332M ELECTRO 3300UF 16WV
C10 C90-5563-05 ELECTRO 2.2UF 50WV
C11 CK73GB1H103K CHIP C 0.010UF K
C12 CD04BJ1E470M ELECTRO 47UF 25WV
C13 CC73GCH1H102J CHIP C 1000PF J
C14 CD04BJ1H100M ELECTRO 10UF 50WV
C15
✽ CD04AY1C332M ELECTRO 3300UF 16WV
C31-42 CK73GB1H103K CHIP C 0.010UF K
C100 CK45FB1H102K CERAMIC 1000PF K
C101,102 CK73GB1H102K CHIP C 1000PF K
C103,104 CD04BJ1H100M ELECTRO 10UF 50WV
C105-108 CC73GCH1H150J CHIP C 15PF J
C109,110 CC73GCH1H101J CHIP C 100PF J
C111,112 CD04BJ1E470M ELECTRO 47UF 25WV
C113-116 CD04BJ1H100M ELECTRO 10UF 50WV
C117,118 CC73GCH1H101J CHIP C 100PF J
C128 CK73GB1H103K CHIP C 0.010UF K
C129 CK73GB1H102K CHIP C 1000PF K
C150 CC73GCH1H470J CHIP C 47PF J
C151,152 CK73GB1H473K CHIP C 0.047UF K
C153,154 CK73FB1H334K CHIP C 0.33UF K
C155-160 CD04BJ1H100M ELECTRO 10UF 50WV
C201,202 CD04BJ1H100M ELECTRO 10UF 50WV
C203,204 CK73GB1H471K CHIP C 470PF K
C205,206 CK45FB1H472K CERAMIC 4700PF K
C207,208 CD04BJ1E470M ELECTRO 47UF 25WV
C209,210 CC45FSL1H221J CERAMIC 220PF J
C211,212 CC45FSL1H101J CERAMIC 100PF J
C213,214 CC45FSL1H470J CERAMIC 47PF J
C215,216 CC45FSL1H100D CERAMIC 10PF D
C217,218 CK73GB1H103K CHIP C 0.010UF K
C219-222 CK73GB1H681K CHIP C 680PF K
C223,224 CQ92FM1H473J MYLAR 0.047UF J
C259,260 CC73GCH1H470J CHIP C 47PF J
C261
✽ CD04BJ1V221M ELECTRO 220UF 35WV
C300 CK45FB1H102K CERAMIC 1000PF K
C301,302 CK73GB1H102K CHIP C 1000PF K
C303,304 CD04BJ1H100M ELECTRO 10UF 50WV
C305-308 CC73GCH1H150J CHIP C 15PF J
C309,310 CC73GCH1H101J CHIP C 100PF J
C311,312 CD04BJ1E470M ELECTRO 47UF 25WV
C313-316 CD04BJ1H100M ELECTRO 10UF 50WV
C317,318 CC73GCH1H101J CHIP C 100PF J
C324 CK73GB1H103K CHIP C 0.010UF K
C350 CC73GCH1H470J CHIP C 47PF J
C351,352 CK73GB1H473K CHIP C 0.047UF K
C353,354 CK73FB1H334K CHIP C 0.33UF K
C355-360 CD04BJ1H100M ELECTRO 10UF 50WV
C401,402 CD04BJ1H100M ELECTRO 10UF 50WV
C403,404 CK73GB1H471K CHIP C 470PF K
C405,406 CK45FB1H472K CERAMIC 4700PF K
C407,408 CD04BJ1E470M ELECTRO 47UF 25WV
C409,410 CC45FSL1H221J CERAMIC 220PF J
C411,412 CC45FSL1H101J CERAMIC 100PF J
C413,414 CC45FSL1H470J CERAMIC 47PF J
C415,416 CC45FSL1H100D CERAMIC 10PF D
C417,418 CK73GB1H103K CHIP C 0.010UF K
C419-422 CK73GB1H681K CHIP C 680PF K
C423,424 CQ92FM1H473J MYLAR 0.047UF J
C459,460 CC73GCH1H470J CHIP C 47PF J
C461
✽ CD04BJ1V221M ELECTRO 220UF 35WV
C601 CD04BJ1V330M ELECTRO 33UF 35WV
C602,603 CD04BJ1H100M ELECTRO 10UF 50WV
C606 CD04BJ1A101M ELECTRO 100UF 10WV
C607 CK73GB1H103K CHIP C 0.010UF K
C608 CD04BJ1A101M ELECTRO 100UF 10WV
C609,610 CK73GB1H103K CHIP C 0.010UF K
C616 CD04BJ1H100M ELECTRO 10UF 50WV
C617 CD04BJ1H0R1M ELECTRO 0.1UF 50WV
C901,902 CC73GCH1H030C CHIP C 3.0PF C